I'm trying to play my PC MP3's through a receiver with large speakers. I have tied them together through the high level jack at the back of the sound card, pluged into the aux. input of the receiver. But I seem to get a lot of distortion which promps me to ask....shouldn't I have plugged into the low level output on the PC and into a low level input on the receiver? One problem, my receiver (Denon AVR 810) doesn't have pre-inputs. So would the phono inputs be my best bet? Any other suggestions?